A mouthguard serves as a barrier, protecting the teeth, gums, and jaws from impact during sports or from the pressures of nighttime teeth grinding, known as bruxism. This protective device is subjected to constant stress, and its ability to absorb force diminishes over time. Replacing a mouthguard regularly is necessary because a worn or ill-fitting device compromises both oral hygiene and the intended level of protection. Replacement frequency depends heavily on the type of use, the material, and the wearer’s age.
General Guidelines for Replacing Mouthguards
Replacement schedules differ significantly between night guards used for bruxism and athletic guards used for contact sports. Custom-fitted night guards for adults may last anywhere from one to five years. However, severe teeth grinding habits can greatly affect this lifespan, often causing guards to wear thin or develop holes within six months to a year.
Athletic mouthguards are subjected to high-impact stress and typically need replacement more often, generally at the start of a new sports season or at least once a year. The material can lose thickness and become less effective at absorbing shock over time, even if visible damage is not apparent.
For children and teenagers, the replacement timeline is much shorter, typically every six months, regardless of wear. This frequent change accommodates the ongoing growth and shifting of the jaw and the eruption of new teeth, ensuring the guard maintains a proper fit. Replacement is also necessary following significant dental work or tooth loss, as changes in oral structure compromise the fit of the existing device.
Physical Signs Indicating Immediate Replacement
Beyond the general timeline, certain physical signs indicate that a mouthguard must be replaced immediately because its protective function is compromised. Cracks, tears, or holes in the material create weak points that reduce the guard’s ability to absorb impact and can harbor harmful bacteria. A guard that has become visibly flattened or noticeably thinner, particularly on the biting surface, has lost the necessary bulk to cushion the teeth effectively.
Other signs requiring immediate replacement include:
- A significant change in fit, such as a guard that feels loose, slips out of place easily, or causes new discomfort.
- Exposure to heat, which can cause the material to warp and permanently lose its shape.
- A persistent foul odor or sticky residue that remains after cleaning, suggesting deep bacterial or fungal colonization.
- Noticeable discoloration or cloudiness that does not wash away, signaling material degradation or structural weakness.
Maintenance Practices to Extend Mouthguard Life
Consistent maintenance maximizes a mouthguard’s usable life and delays the need for premature replacement. After each use, the device should be rinsed immediately with cool or lukewarm water to remove saliva and debris. Daily cleaning involves gently scrubbing the guard with a soft-bristled toothbrush and a mild soap or non-abrasive cleaner. Avoid harsh toothpaste, which can scratch the material and create surfaces for bacteria to accumulate.
Proper storage is necessary to maintain the guard’s structural integrity and hygiene. The mouthguard must be allowed to air-dry completely before being placed in a ventilated storage case, as trapped moisture promotes bacterial growth. Keep the guard away from sources of extreme heat, such as direct sunlight, because high temperatures can cause the material to permanently deform its shape. Regularly cleaning the storage case itself prevents the transfer of germs back onto the clean guard.